Solar Sailing Spacecraft Unfurls Its Sails, Finally

It hasn’t been entirely smooth sailing for LightSail, but on Sunday its tribulations came to a happy conclusion.

Since its launch on May 20, technical glitches prevented the LightSail satellite from accomplishing its one and only task: unfurling four massive Mylar sails that, theoretically, could harness energy from the sun to propel the spacecraft through space. The satellite is a prototype, meant to serve as a proof of concept for this design of spacecraft.

And finally, at 3:47 p.m.

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